About the Authors

Ayalu A. Reda

ayaluaklilu@yahoo.com

Affiliation Department of Public Health, College of Health Sciences, Haramaya University, Harar, Ethiopia

Asmamaw Moges

Affiliations Department of Public Health, College of Health Sciences, Haramaya University, Harar, Ethiopia, School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia

Sibhatu Biadgilign

Affiliation Department of Epidemiology and Biostatistics, College of Medical and Health Sciences, Jimma University, Jimma, Ethiopia

Berhanu Y. Wondmagegn

Affiliation Department of Environmental Health Science, College of Health Sciences, Haramaya University, Harar, Ethiopia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AAR AM BYW. Performed the experiments: AAR AM BYW. Analyzed the data: AAR AM. Wrote the paper: AAR AM SB. Significantly involved in writing the study proposal: AAR AM BYW.